antlell

Hello Coulomb. Thanks for the suggestions. I'll try and get the answers to your questions. The FCS manual is here, if that helps at all.

Hi. New to this, and uncertain about original installation. We have an FCS-3K-VP-3000 inverter (FULLCIRCLESOLAR) installed April 2019, and 4 x 400Ah Lead-acid batteries. We have four 350W PV panels installed later. Load on the inverter is normally <25%, yet the inverter tends to swap to utility after only a few minutes of using the panels. I’m wondering if the batteries are not holding charge properly?

Greetings We have an FCS-3K-VP-3000 inverter (FULLCIRCLESOLAR) installed April 2019, and 4 x 400Ah Lead-acid batteries. We have four 350W PV panels. Load on the inverter is normally <25%, yet the inverter tends to swap to utility after only a few minutes of using the panels. I’m wondering if the batteries are not holding charge properly?